简介：这篇论文在一所突尼斯的大学里在一个机构处理功课Timetabling问题。我们介绍一个启发式的过程为任何节的每个分部的不同的组进行的所有讲课和教程构造一张可行时间表。我们用所有特定的难、软的限制的一张表描述timetabling问题。我们分别地用相应于讲课和教程的二进制变量的二个集合作为一套线性限制提出这个问题。这启发式在突尼斯为经济的学院和斯法克斯的管理科学的一个分部与真实数据被说明，并且产生时间表与手工地产生的那些相比。另一完整的节的结果证实了好质量求婚启发式什么时候与手工制作的答案相比。

简介：TourismSatelliteAccount(TSA)isthenewestmethodformeasuringtheimpactoftourismoneconomyintheworld.TherehasbeengloballyabigtrendofdevelopmentofTSAsafteritwasapprovedasainternationalstandardbyUnitedNationsStatisticalCommission(UNSC)inMarchof2000.ThisresearchisafirstpilotexerciseofTSAmethodinChina.Theresultoftheresearchhasdrawnmuchattentionfromthetourismadministrationsandstatisticsofficesatnationallevelandthelocallevels.

简介：Accurateandeffectiveassessmentofstrategicalternativesofanorganizationdirectlyaffectsthedecision-makingandexecutionofitsdevelopmentstrategy.Inevaluationofstrategicalternatives,relevantelementsfrombothinternalandexternalenvironmentsofanorganizationmustbeconsidered.Inthispaperweusestrategicassessmentmodeltoevaluatestrategicalternativesofanair-conditioningcompany.Strategicobjectivesandalternativesofthecompanyaredevelopedthroughanalysisofthecompetitiveenvironment,keycompetitorsandinternalconditions.Theenvironmentfactorsareclassifiedintointernal,task,andgeneralopportunitiesandthreats.Analyticalhierarchyprocess,subjectiveprobabilities,entropyconcept,andutilitytheoryareusedtoenhancedecision-maker＇sabilityinevaluatingstrategicalternatives.Theevaluationresultsshowthatthemosteffectivestrategicalternativeforthecompanyistoreducetypesofproducts,concentrateitseffortonproducingwindow-typeandcupboard-typeair-conditioners,enlargetheproductionscale,andpre-emptthemarket.Thecompanyhasmadegreatprogressbyimplementingthisalternative.WeconcludethatSAMisanappropriatetoolforevaluatingstrategicalternatives.

简介：Acommonfeatureofpreviousstudiesabouttheapplicationofdataenvelopmentanalysis(DEA)todetermineenvironmentalandeconomicefficienciesisthatthetwowereanalyzedinseparatemodelsorframeworks.Thepurposeofthispaperistoanalyzetheeconomicefficiencyandenvironmentalefficiencywithasinglemodel.ThispaperproposesanintegratedDEAmodel,basedonamodificationofthedirectionaldistancefunction,whichallowsustodecomposetheeco-efficiency(EE)intotheeconomicefficiency(ECE)andenvironmentalefficiency(ENE).TheECEcharacterizestheabilityofgainingeconomicbenefitswhiletheENEcharacterizestheabilitytocontrolpollutantemissionsinproductionactivities.IdentificationofECEandENEcanhelpdecisionmakersofdifferentregionsdetectwhatkindoffactor(economicinefficiencyorenvironmentalinefficiency)isthemainsourceofeco-inefficiency.ThiscanhelpdecisionmakersmoretargetedtoimproveEE.Toillustratethefeasibilityofourapproach,acasestudyof30regionsinChinaispresented.Theempiricalresultsshowthatalmostallregionshaveveryhigheconomicefficiencies.Theenvironmentalinefficiencyisthemainsourceofeco-inefficiency.Thedifferencesofenvironmentalefficienciesleadtothedifferencesofeco-efficienciesintheeast,centralandwestareas,whiletheeconomicefficienciesdonothavesignificantdifferencesamongtheseareas.Theeconomicefficienciesshowedanopposite'V'shapeandtheenvironmentalefficienciesshowedadecreasingtrendduringtheperiod2010–2014.

简介：在计划的以前的撤退流动，最佳的动态交通赋值SO-DTA没考虑外长的费用的一个系统由潜在的交通事故引起了。因为下游的车辆经验丰富的事故相关的延期，一个交通事故，可能由于交通拥挤发生，将影响一个撤退过程。这份报纸建立概括系统费用在合并旅行时间和事故相关的延期的一个基于安全的SO-DTA线性编程模型。目标是在房间传播安装下面最小化概括系统费用。而且，作者提供认为两个是决定制造者和撤离者的线路选择行为的目的战略指导信息。算术地，作者建议一个非强迫的非线性的编程模型瞄准了最小化在基于安全的流动和随机的真实世界的撤退流动之间的差距，到提供战略旅行时间信息在可变消息符号VMS上被出版。在案例研究，作者发现基于安全的SO-DTA模型能减少拥挤并且改进撤退效率；随机的真实世界的撤退流动，由战略信息指导了，能接近基于安全的流动。

简介：Rapidexpansionofbig-boxstoreindevelopingcountrycausedtypicalarchetypalchangeinmarketstructure:SuccesstotheSuccessful,becausebig-boxstoresarmedwithmodernizedinfrastructureandmanagementcapabilityareabsorbingtheoncecustomersofthetraditionalmarketlikeablackhole.Facingrapidchangeinmarketstructureandsurmountingpleasfromtraditionalmarketmerchants,governmenttookaninevitableinterventionwithlawregulatingthebig-boxstore’sbusinessandimprovingtraditionalmarket’scompetencebuilding.Notsolong,however,didgovernmentconfrontpolicyresistancefrombothsides:Stillongoingpolarizationofbothside’ssales.Thisstudyarticulatesbehaviorovertimeofmarketstructurewithcausalloopdiagramsofwhichcausalitiesareextractedfromliteratures.Thisstudyprovidessignificantcontributiontopolicymakersandtraditionalmarkets’merchantsinotherdevelopingcountrieslikeIndiaandChina,aswellasKorea.

简介：Asthepaceofurbanizationisaccelerating,increasingamountoffloodplainhasbeenprojectedasthefuturecities.Subsequently,urbanfloodingisbeingstudiedbyglobalemergencymanagementexportsduetoitsincreasinglysignificantimpactonus.Someexistingresearchonfloodingemergencymanagementbasedonthecase-basedreasoning(CBR)methodhavemadetremendousprogress,buttheurbanfloodingcasewithitsstratifieddatacharacteristicsisrequiredanewmethodologywhichisdifferentfromtheonesappliedtoflashfloods.So,basedonthecase-basedreasoning(CBR)method,thispaperproposedaCPIE-CBRmodelwithfourlayers,classificationfiltration,punctiformsimilarity,intervalsimilarityandentropyweightmethod,tocalculatethecasesimilarityamongtheurbanfloodingcasewithstratifieddatacharacteristics.ThenwecarryoutthenumericalsimulationwiththerealdataaboutChinaandconductsomecomparisonwithoriginalwayssothatweobservethevalidityandefficiencyofourmodelintheend.

简介：Basedonthenotionofmaximalabsoluteobservabilityanditsnormalforms,anewmethodforstudyingthelocalstabilizationforakindofnonlinearcontrolsystemsisestablished.DifferentfromthepreviousresultsgivenbyByrnes-Isitoriandothers,thisnewmethodcandealwithmoregeneralsystems,andhasmuchsimplerwaytoprovethestabilizationconditionsandtodesignthefeedbacklaws.

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简介：Inthispaper,supposingthatthereceivedsignalsattheinputareoftheformv（t）=s1[t,x1（t）]s2[t,x2（t）]+n（t）wheresiareFMsignals（i=1,2）,anovelcross-coupledphase-lockedloop（CCPLL（M））anditsmathematicalmodelareobtained.Theglobalqualitativestructuralanalysisofthemathematicalmodelofthefirst-orderloop,theacqui-sitionregionandsynchronizationregionofthefirst-orderloop,andthesynchronizationregionofthesecond-orderloopareobtained.

简介：Inthisnote,thedissipativecontrolproblemofthegeneralquadraticsupplyrateforstatedelayedsystemsisconsidered.Asystematicapproachisusedinthisworksothatasufficientconditionontheexistenceofadelay-independentstatefeedbackcontrollerisgiven.Inaddition,asufficientconditionontheexistenceofadelay-dependentstatefeedbackispresented.Oursolutionsareexpressedintermsofmatrixinequalitiesthatcanbesolvedbynumericalmethod.Thedelay-dependentcontrollermightbelessconservativethanthedelay-independentoneinthesensethatthedelay-dependentcasemayhaveasolutionforalargerclassofsystemsthanthatfordelay-independentcase.

简介：Thispaperdealswithfluxtrackingcontrolofinductionmotors.Firstly,weanalyzeconvergencyofnon-homogeneouslineartime-varyingsystemsandasufficientconditionisgiven.Finally,thefluxregulatorofinductionmotorsisdiscussed.

简介：EllipticPDE-constrainedoptimalcontrolproblemswithL^1-controlcost(L^1-EOCP)areconsidered.TosolveL^1-EOCP,theprimal-dualactiveset(PDAS)method,whichisaspecialsemismoothNewton(SSN)method,usedtobeapriority.However,ingeneralsolvingNewtonequationsisexpensive.Motivatedbythesuccessofalternatingdirectionmethodofmultipliers(ADMM),weconsiderextendingtheADMMtoL^1-EOCP.TodiscretizeL^1-EOCP,thepiecewiselinearfiniteelement(FE)isconsidered.However,differentfromthefinitedimensionalL^1-norm,thediscretizedL^1-normdoesnothaveadecoupledform.Toovercomethisdifficulty,aneffectiveapproachisutilizingnodalquadratureformulastoapproximatelydiscretizetheL^1-normandL^2-norm.Itisprovedthattheseapproximationstepswillnotchangetheorderoferrorestimates.Tosolvethediscretizedproblem,aninexactheterogeneousADMM(ihADMM)isproposed.DifferentfromtheclassicalADMM,theihADMMadoptstwodifferentweightedinnerproductstodefinetheaugmentedLagrangianfunctionintwosubproblems,respectively.Benefitingfromsuchdifferentweightedtechniques,twosubproblemsofihADMMcanbeefficientlyimplemented.Furthermore,theoreticalresultsontheglobalconvergenceaswellastheiterationcomplexityresultso(1/k)forihADMMaregiven.Inordertoobtainmoreaccuratesolution,atwo-phasestrategyisalsopresented,inwhichtheprimal-dualactiveset(PDAS)methodisusedasapostprocessoroftheihADMM.Numericalresultsnotonlyconfirmerrorestimates,butalsoshowthattheihADMMandthetwo-phasestrategyarehighlyefficient.

简介：Thispaperconsidersaworst-caseinvestmentoptimizationproblemwithdelayforafundmanagerwhoisinacrash-threatenedfinancialmarket.Drivenbyexistingofcapitalinflow/outflowrelatedtohistoryperformance,weinvestigatetheoptimalinvestmentstrategiesundertheworst-casescenarioandthestochasticcontrolframeworkwithdelay.Thefinancialmarketisassumedtobeeitherinanormalstate(crash-free)orinacrashstate.InthenormalstatethepricesofriskyassetsbehaveasgeometricBrownianmotion,andinthecrashstatethepricesofriskyassetssuddenlydropbyacertainrelativeamount,whichinducestoadroppingofthetotalwealthrelativetothatofcrash-freestate.Weobtaintheordinarydifferentialequationssatisfiedbytheoptimalinvestmentstrategiesandtheoptimalvaluefunctionsunderthepowerandexponentialutilities,respectively.Finally,anumericalsimulationisprovidedtoillustratethesensitivityoftheoptimalstrategieswithrespectivetothemodelparameters.

简介：Controlinvariantsetsplayakeyroleinmodelpredictivecontrol.UsingLyapunovfunction,atechniqueisproposedtodesigncontrolinvariantsetsofplanarsystemsinapreciseform.First,itisdesignedforalinearsysteminBrunovskycanonicalform.Then,theresultisextendedtogenerallinearsystems.Finally,thenonlinearcontrolsystemsareconsidered,andsomesufficientconditionsanddesigntechniquesarealsoobtained.Numericalexamplesarepresentedtoillustratetheproposeddesignmethods.

简介：WeconsideroptimalbirthcontrolfortheMcKendrickequationofpopulationdyna-mics.Itconsistsofoptimizingasystemdescribedbyafirstorderpartialdifferentialequationwithnonlo-calbilinearboundarycontrol.ApproximateminimumprinciplesareobtainedusingEkeland’svariationalprinciple.

简介：著作的一个珍贵数字关于Hurwitz和Schur多项式被出版了以便更好知道他们的性质。例如，Hurwitz和Schur多项式的集合是开、不凸的集合，这被知道。而且，monicSchur多项式的集合是会缩的。现在，我们从微分拓扑学用想法学习这个集合，并且我们证明有积极领先的系数的Schur复杂多项式的空间，和有积极真实部分的领先的系数的Hurwitz复杂多项式的空间，有小向量捆的结构，并且每个空格(复杂、真实的Schur，Hurwitz建筑群)多项式到一些的微分结构diffeomorphic知道了空格。

简介：Thispaperdiscussestheharmonicproblemsincontrolsystemsfromtwoaspects:Oneistheharmoniccontrolamongdifferentsubsystems,andtheotheristheharmoniccontrolamongmultipleinputs.Someintrinsicproblemsinsuchsystemsarediscussed.Itispointedoutthatsomesubsystemsmustbeunstabletostabilizethewholeinterconnectedsystembyanexample.Especiallyfordiscrete-timemulti-inputsystems,anecessaryandsufficientconditionispresentedforthestrictdecreaseofthequadraticoptimalperformanceindexwiththecontrolinputextensions.Thisshowsanessentialdifferencebetweensingle-inputandmulti-inputcontrolsystems.Finally,somefutureresearchdirectionsarediscussedinharmoniccontrolofinterconnectedsystems,allocationofmulti-controlinputs,fault-tolerantcontrol,andfault-diagnosis.

简介：FortheARMAXsystemwithunknowncoefficientstheoptimaladaptivecontrolisdesignedsothatthefollowingrequirementsaremetsimultaneously:1)thetransferfunctionfromareferencesignaltothesystemoutputintheclosedloopequalsaprescribedrationalfunction;2)undertheconstraintmentionedin1)aquadraticlossfunctionisminimized;3)theparameterestimateisstronglyconsistent.

简介：Inthispaper,forzero-failuredata(ti,ni),atmomentti,ifthepriordistributionofthefailureprobabilitypi=P{T＜ti}isincompleteFisher-Zdistribution:Fisher-Z(0,λi;a,b),theauthorgivespihierarchicalBiyesianestimationandtheestimationofreliabilityunderzero-failuredataconditionisobtainedalso.Theauthoralsogivesapracticalcalculatingexampleusingthetheory.